#pragma once
#include <iostream>
#include <functional>
#include "InetAddr.hpp"
#include "Socket.hpp"
#include "Log.hpp"
#include "Protocol.hpp"

using namespace socket_ns;
using namespace log_ns;

using process_t = std::function<std::shared_ptr<Response>(std::shared_ptr<Request>)>;


class IOService
{
public:
    IOService(process_t process):_process(process)
    {
    }
    void IOExcute(SockSPtr sock, InetAddr &addr)
    {
        std::string packagestreamqueue;
        while (true)
        {
            // 1. 负责读取
            ssize_t n = sock->Recv(&packagestreamqueue);
            if (n <= 0)
            {
                LOG(INFO, "client %s quit or recv error\n", addr.AddrStr().c_str());
                break;
            }
            std::cout << "--------------------------------------------" << std::endl;
            std::cout << "packagestreamqueue: \n" << packagestreamqueue << std::endl;
            // 我们能保证我们读到的是一个完整的报文吗？不能！
            // 2. 报文解析，提取报头和有效载荷
            std::string package = Decode(packagestreamqueue);
            if(package.empty()) continue;
            // 我们能保证我们读到的是一个完整的报文吗?能！！
            auto req = Factory::BuildRequestDefault();
            std::cout << "package: \n" << package << std::endl;
            // 3. 反序列化
            req->Deserialize(package);

            // 4. 业务处理
            auto resp = _process(req); // 通过请求，得到应答

            // 5. 序列化应答
            std::string respjson;
            resp->Serialize(&respjson);
            std::cout << "respjson: \n" << respjson << std::endl;

            // 6. 添加len长度报头
            respjson = Encode(respjson);
            std::cout << "respjson add header done: \n" << respjson << std::endl;

            // 7. 发送回去
            sock->Send(respjson);
        }
    }
    ~IOService()
    {
    }
private:
    process_t _process;
};